Django：如何在管理页面中的 list_editable 时清理数据？答案

【问题标题】：Django: How to clean data when list_editable in admin page?Django：如何在管理页面中的 list_editable 时清理数据？
【发布时间】：2022-07-09 01:19:21
【问题描述】：

我有一个模型，它有一个“关键字”字段。当我使用表单创建/修改记录时，我可以清理该字段然后保存它。

class ILProjectForm(forms.ModelForm):

    class Meta:
        models = ILProject
        fields = '__all__'


    def clean_keywords(self):
        k = self.cleaned_data.get('keywords')
        if k:
            k = ','.join([a.strip() for a in re.sub('\\s+', ' ', k).strip().split(',')])
        return k

但是，当我在管理页面中使用 list_editable 选项时，我不确定如何运行 clean() 来更新数据。

我尝试了类似这样的操作，但收到一条错误消息，提示我无法设置属性。数据清理后更新数据的正确方法是什么？

class MyAdminFormSet(BaseModelFormSet):

    def clean(self):
        print(type(self.cleaned_data))
        recs = []
        for r in self.cleaned_data:
            if r['keywords']:
                r['keywords'] = ','.join([a.strip() for a in re.sub('\\s+', ' ', r['keywords']).strip().split(',')])
                print(r['keywords'])
            recs.append(r)
        self.cleaned_data = recs      <-- this part is problematic.

class ILProjectAdmin(...)
...
        def get_changelist_formset(self, request, **kwargs):
            kwargs['formset'] = MyAdminFormSet
            return super().get_changelist_formset(request, **kwargs)

【问题讨论】：

我建议重用 ILProjectForm 而不是在表单集中复制逻辑。

标签： django

【解决方案1】：

应该是这样的：

class ILProjectAdmin(...)
    ... 
    def get_changelist_form(self, request, **kwargs):
            return ILProjectForm

【讨论】：

【解决方案2】：

请参考此提示：Django: Access request object from admin's form.clean()

class ProjectRequestForm(forms.ModelForm):
    class Meta:
        model = ProjectRequest

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request', None)
        super(ProjectRequestForm, self).__init__(*args, **kwargs)
        
    def clean(self):
        if self.request.user.has_perm('access_role'):
            raise ValidationError(f'No permission', code='invalid')


class ProjectRequestAdmin(admin.ModelAdmin):

    def get_form(self, request, obj=None, **kwargs):
        form = super(ProjectRequestAdmin, self).get_form(request, obj, **kwargs)

            class AdminFormWithRequest(form):
                def __new__(cls, *args, **kwargs):
                    kwargs['request'] = request
                    return form(*args, **kwargs)            
        return AdminFormWithRequest

    def get_changelist_form(self, request, **kwargs):
        class AdminFormWithRequest(ProjectRequestForm):
            def __new__(cls, *args, **kwargs):
                kwargs['request'] = request
                return ProjectRequestForm(*args, **kwargs)            
        return AdminFormWithRequest

【讨论】：